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Romasco T, Pignatelli P, Tumedei M, Hossein HHS, Cipollina A, Piattelli A, Inchingolo F, Di Pietro N. The influence of truncated-conical implant length on primary stability in maxillary and mandibular regions: an in vitro study using polyurethane blocks. Clin Oral Investig 2023; 28:28. [PMID: 38147179 DOI: 10.1007/s00784-023-05444-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 12/17/2023] [Indexed: 12/27/2023]
Abstract
OBJECTIVES This in vitro study is aimed at assessing whether implant primary stability is influenced by implant length in artificial bone with varying densities. MATERIALS AND METHODS A total of 120 truncated-conical implants (60 long-length: 3p L, 3.8 × 14 mm; 60 short-length: 3p S, 3.8 × 8 mm) were inserted into 20, 30, and 40 pounds per cubic foot (PCF) density polyurethane blocks. The insertion torque (IT), removal torque (RT), and resonance frequency analysis (RFA) values were recorded for each experimental condition. RESULTS In 30 and 40 PCF blocks, 3p S implants exhibited significantly higher IT values (90 and 80 Ncm, respectively) than 3p L (85 and 50 Ncm, respectively). Similarly, RT was significantly higher for 3p S implants in 30 and 40 PCF blocks (57 and 90 Ncm, respectively). However, there were no significant differences in RFA values, except for the 20 PCF block, where 3pS implants showed significantly lower values (63 ISQ) than 3p L implants (67 ISQ) in both the distal and mesial directions. CONCLUSIONS These results demonstrated that the implant's length mainly influences the IT and RT values in the polyurethane blocks that mimic the mandibular region of the bone, resulting in higher values for the 3p S implants, while the RFA values remained unaffected. However, in the lowest density block simulating the maxillary bone, 3p L implants exhibited significantly higher ISQ values. CLINICAL RELEVANCE Therefore, our data offer valuable insights into the biomechanical behavior of these implants, which could be clinically beneficial for enhancing surgical planning.
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Affiliation(s)
- Tea Romasco
- Center for Advanced Studies and Technology-CAST, "G. D'Annunzio, University of Chieti-Pescara, Via Luigi Polacchi 11, 66100, Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy
| | - Pamela Pignatelli
- Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy
| | - Margherita Tumedei
- Department of Medical, Surgical, and Dental Sciences, University of Milan, Via della Commenda 10, 20122, Milan, Italy
| | - Hamid Heydari Sheikh Hossein
- Center for Advanced Studies and Technology-CAST, "G. D'Annunzio, University of Chieti-Pescara, Via Luigi Polacchi 11, 66100, Chieti, Italy
- Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy
- Villa Serena Foundation for Research, Via Leonardo Petruzzi 42, 65013, Città Sant'Angelo, Italy
| | | | - Adriano Piattelli
- School of Dentistry, Saint Camillus International, University of Health and Medical Sciences, Via di Sant'Alessandro 8, 00131, Rome, Italy
- Facultad de Medicina, UCAM Universidad Católica San Antonio de Murcia, Av. de los Jerónimos 135, 30107, Guadalupe de Maciascoque, Spain
| | - Francesco Inchingolo
- Interdisciplinary Department of Medicine, University of Bari "Aldo Moro", Piazza Umberto I, 70121, Bari, Italy
| | - Natalia Di Pietro
- Center for Advanced Studies and Technology-CAST, "G. D'Annunzio, University of Chieti-Pescara, Via Luigi Polacchi 11, 66100, Chieti, Italy.
- Department of Medical, Oral and Biotechnological Sciences, "G. D'Annunzio" University of Chieti-Pescara, Via dei Vestini 31, 66100, Chieti, Italy.
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Cipollina A, Ceddia M, Di Pietro N, Inchingolo F, Tumedei M, Romasco T, Piattelli A, Specchiulli A, Trentadue B. Finite Element Analysis (FEA) of a Premaxillary Device: A New Type of Subperiosteal Implant to Treat Severe Atrophy of the Maxilla. Biomimetics (Basel) 2023; 8:336. [PMID: 37622941 PMCID: PMC10452205 DOI: 10.3390/biomimetics8040336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/26/2023] Open
Abstract
Extreme atrophy of the maxilla still poses challenges for clinicians. Some of the techniques used to address this issue can be complex, risky, expensive, and time consuming, often requiring skilled surgeons. While many commonly used techniques have achieved very high success rates, complications may arise in certain cases. In this context, the premaxillary device (PD) technique offers a simpler approach to reconstruct severely atrophic maxillae, aiming to avoid more complicated and risky surgical procedures. Finite element analysis (FEA) enables the evaluation of different aspects of dental implant biomechanics. Our results demonstrated that using a PD allows for an optimal distribution of stresses on the basal bone, avoiding tension peaks that can lead to bone resorption or implant failure. ANSYS® was used to perform localized finite element analysis (FEA), enabling a more precise examination of the peri-crestal area and the PD through an accurate mesh element reconstruction, which facilitated the mathematical solution of FEA. The most favorable biomechanical behavior was observed for materials such as titanium alloys, which helped to reduce stress levels on bone, implants, screws, and abutments. Additionally, stress values remained within the limits of basal bone and titanium alloy strengths. In conclusion, from a biomechanical point of view, PDs appear to be viable alternatives for rehabilitating severe atrophic maxillae.
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Affiliation(s)
| | - Mario Ceddia
- Department of Mechanics, Mathematics and Management, Politecnico di Bari University, 70125 Bari, Italy; (M.C.); (B.T.)
| | - Natalia Di Pietro
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (A.S.)
- Center for Advanced Studies and Technologies (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine, University of Bari “Aldo Moro”, 70124 Bari, Italy;
| | - Margherita Tumedei
- Department of Medical, Surgical and Dental Sciences, University of Milan, 20122 Milan, Italy;
| | - Tea Romasco
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (A.S.)
- Center for Advanced Studies and Technologies (CAST), “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy
| | - Adriano Piattelli
- School of Dentistry, Saint Camillus International University of Health and Medical Sciences, 00131 Rome, Italy;
- Facultad de Medicina, UCAM Universidad Católica San Antonio de Murcia, 30107 Murcia, Spain
| | - Alessandro Specchiulli
- Department of Medical, Oral and Biotechnological Sciences, “G. d’Annunzio” University of Chieti-Pescara, 66100 Chieti, Italy; (T.R.); (A.S.)
| | - Bartolomeo Trentadue
- Department of Mechanics, Mathematics and Management, Politecnico di Bari University, 70125 Bari, Italy; (M.C.); (B.T.)
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